The unicode property indicates whether or not the "u" flag is used with a regular expression. unicode is a read-only property of an individual regular expression instance.

Property attributes of RegExp.prototype.unicode
Writable no
Enumerable no
Configurable yes

Description

The value of unicode is a Boolean and true if the "u" flag was used; otherwise false. The "u" flag enables various Unicode-related features. With the "u" flag, any Unicode code point escapes will be interpreted as such, for example.

You cannot change this property directly. It is read-only.

Examples

Using the unicode property

var regex = new RegExp('\u{61}', 'u');

console.log(regex.unicode); // true

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'RegExp.prototype.unicode' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'RegExp.prototype.unicode' in that specification.
Draft  

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetNode.js
Basic supportChrome Full support 50Edge Full support 12
Notes
Full support 12
Notes
Notes Case folding is implemented in version 13
Firefox Full support 46IE No support NoOpera Full support 37Safari Full support 10WebView Android Full support YesChrome Android Full support 50Edge Mobile Full support YesFirefox Android Full support 46Opera Android Full support 37Safari iOS Full support 10Samsung Internet Android Full support 5.0nodejs Full support Yes

Legend

Full support  
Full support
No support  
No support
See implementation notes.
See implementation notes.

See also

Document Tags and Contributors

Contributors to this page: wbamberg, schalkneethling, fscholz, jameshkramer, kdex, valtlai, arai
Last updated by: wbamberg,